CN1392680A - Electromagnetic signal receiving and/or transmitting device using radiation diversity - Google Patents
Electromagnetic signal receiving and/or transmitting device using radiation diversity Download PDFInfo
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- CN1392680A CN1392680A CN02123210A CN02123210A CN1392680A CN 1392680 A CN1392680 A CN 1392680A CN 02123210 A CN02123210 A CN 02123210A CN 02123210 A CN02123210 A CN 02123210A CN 1392680 A CN1392680 A CN 1392680A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
- H01Q13/085—Slot-line radiating ends
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Radio Transmission System (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
A device for the reception and/or the transmission of electromagnetic signals comprises at least two means of reception and/or of transmission of electromagnetic signals of the slot-fed antenna (11a, 11b, 11c, 11d) type and means of connection for connecting at least one of the said means of reception and/or of transmission to means of utilization of the multibeam signals, in which the means of connection consist of two feed lines (12, 13) connected by a connection element to the utilization means (P), the two lines being coupled electromagnetically with the slots of the slot-fed antennas, each line terminating in a switching element (14, 15) arranged in such a way as to simulate, as a function of a monitoring signal, an open circuit or a short circuit at the extremity of one of the lines and a short circuit or an open circuit at the extremity of the other line so as to obtain different radiation patterns.
Description
Technical field
The electromagnetic signal that the present invention relates to be applied to the wireless transmission field receives and/or emitter, and in particular such as home environment, gymnasia is under the situation that the sealing in television stadio or auditorium etc. and so on or semiclosed environment are launched.
Background technology
In the known system that is used for the high throughput wireless emission, the signal that is sent by transmitter arrives receiver along a plurality of distinct paths.When these paths when receiver layer lumps together, the jamming pattern that causes that differs between the different radiation in the different paths of the length of passing by is easy to cause fading out of signal or degeneration that signal is suitable.And the conversion of fading out the position in a period of time is the function of environmental change, such as the appearance of new object or there is the people to pass through.This class be owing to fading out of causing of multipath may be caused bigger degeneration, and described degeneration not only can be regarded as signal quality but also degeneration that can be regarded as systematic function.
For correction relates to the problem of fading out of multipath, current use be directional antenna, by the spatial selectivity of their antenna patterns, can reduce the number of the radiation that picks by receiver, the multipath effect of therefore can decaying.In this case, requirement can guarantee that with a plurality of directional antennas that signal processing circuit combines 360 ° space covers.French patent application number is 9813855, and the patent of submitting with applicant's name has also proposed a kind of small-sized multi-beam antenna that can increase the array antenna spectrum efficiency.But with regard to the indoor item number or the number of portable equipment, it is heavy and expensive that these solutions still seem.
In order to prevent to fade out, the most frequently used technology is to use space diversity.As shown in Figure 1, this technology comprises and has used a pair of wide space cover antenna such as two pasted sheet type antennas (1,2) that link together with switch 3.These two antennas spatially separate certain distance, and described distance must be more than or equal to λ
0/ 2, λ wherein
0Be and the corresponding wavelength of operating frequency of antenna.According to this device, what can show is that the probability that fades out simultaneously of two antennas is very little.Evidence is from " RFDC " chapter 7 of Kamilo doctor Feher---given explanation in the diversity technique of mobile radio system, especially Fig. 7 .8 of the 344th page.Also can prove by pure probability calculation when independent in that the reception grade of each paster of hypothesis is complete.In this case, can stipulate that the probability that the grade of two antennas is lower than this threshold value is P if P (for example being 1%) is the grade of antenna receiving signal is lower than the probability of detection threshold
2(being 0.01% therefore).If two signals are not uncorrelated fully, so to P
DivHave: 0.01%＜P
Div＜1%, P wherein
DivFor under the situation of diversity, receiving the probability that grade is lower than detection threshold.But, rely on switch 3, just can select to be linked at the branch road that shows higher level to the check of the signal of reception by supervisory circuit (not providing).Duplexer 3 links to each other with switch 4, and described switch 4 can be controlled two paster antennas 1 or 2: when they are connected the TX5 circuit, make it to be in emission state, perhaps when they are connected the RX6 circuit, make it to be in accepting state.
Summary of the invention
The objective of the invention is to propose the replacement scheme of the conventional scheme of the above-mentioned type, described scheme is applied to slot-feed type, and can obtain radiation diversity.
The present invention also aims to propose a kind of scheme that can keep the quasi-omnibearing angle to cover.
Therefore, theme of the present invention is the device that receives and/or launch electromagnetic signal, described device comprises: the reception and/or the emitter of at least two slot-feed antennas type electromagnetic signals, with the jockey that at least one described reception and/or emitter are linked to each other with the operative installations of multibeam signals, it is characterized in that, jockey comprises by Connection Element and is connected two feeder lines on the operative installations, electromagnetic coupled between the slot of described two feeder lines and slot-feed antennas, every feeder line is terminal with the switch element, described switch element is placed with simulation as the open circuit of a feeder terminal of the function of pilot signal and the short circuit and the open circuit of short circuit and another feeder terminal by certain mode, thereby can obtain different antenna patterns.
According to a preferred embodiment of the invention, slot-feed antennas is around the central point Vivaldi type antenna opened of regular interval each other.And feeder line comprises microstrip antenna or coplane antenna.
According to the present invention, feeder line passes the open circuit zone of slot-feed antennas about slot.
According to another embodiment of the invention, feeder line passes two distinct open circuit planes in the slot of slot-feed antennas.And the length of first feeder line between two slots of slot-feed antennas equals k λ
1, and the length of second feeder line between two slots of slot-feed antennas equals (k+0.5) λ
1, λ wherein
1Be the wavelength of importing feeder line, and k is a positive integer.
According to a preferred embodiment of the invention, switch element comprises diode.Connection Element comprises the T element, and described size of component is set to will be selectively sends into energy to one or another feeder line.Therefore, feeder line equals 1=n λ in the slot and the length between the T of slot-feed antennas
1/ 2, wherein n is an integer, λ
1For importing the wavelength of feeder line.
Description of drawings
With reference to the accompanying drawings, will make other characteristics of the present invention and advantage clearer to the explanation of different embodiment below reading, wherein:
Fig. 1 is the floor map of having described according to the space diversity formula electromagnetic signal transmission/reception of background technology.
Fig. 2 schematically shows the plan view from above of first embodiment according to the invention.
Fig. 3 is used to verify schematic diagram according to the operation principle of the feeder line/slot device of the analog result of simple structure of the present invention for explanation.
Fig. 4 a and 4b be coupled into for expression is selective Fig. 3 circuit two in the curve of work structuring.
Fig. 5 is the floor map of the T circuit of two feeder lines using in can feed-in the present invention.
Fig. 6 schematically shows for the device of circuit in the simulation drawing 5.
Fig. 7 a and 7b under the situation of two kinds of work structuring of circuit in Fig. 6 according to the present invention as the curve that provides match condition of the function of frequency.
Fig. 8 a and 8b are used for the schematic top plan view of the working method of device in the key diagram 2.
Fig. 9 represents to control voltage and is+VCC or-during VCC, the antenna pattern that installs among the Fig. 2 as azimuthal function.
Figure 10 is the schematic top plan view according to another embodiment of device of the present invention.
Be simplified illustration, components identical is represented with identical reference number in the drawings.
Embodiment
Shown in Fig. 2 is to comprise slot-feed antennas and demonstrate the reception of radiation diversity and/or first embodiment of device of emission electromagnetic signal.
As shown in Figure 2,4 antenna 11a, 11b, 11c, 11d are Vivaldi type antennas, they are produced in the common substrate 10, and place around central point is vertical mutually.According to known pattern, the structure of Vivaldi type antenna is made of the slot that non-metallic substrate obtains, and described slot is outwards widened gradually.This antenna structure is known by those skilled in the art, thereby need not among the present invention again this to be described in detail.
According to the present invention, 4 Vivaldi type antennas are by 12,13 excitations of two feeder lines, and these two feeder lines are such as making by micro-band technique.Slot and end that these two feeder lines pass 4 Vivaldi type antennas all have switch element 14,15, described switch element 14,15 are placed between the end and ground wire of feeder line, like this, as the function that puts on the control voltage on the feeder line, just can be and at the end simulation short circuit and the open circuit of another feeder line in feeder terminal simulation open circuit or short circuit.
As shown in Figure 2, switch element comprises the diode 14 that forward is installed between feeder line 13 and the ground wire, and the diode of oppositely installing between feeder line 12 and the ground wire 15.And two feeder lines 12,13 are connected on general transmit/receiving circuit of representing with symbol P by T circuit 16.Obtain showing the working method of the structure of the radiation diversity of wanting, feeder line needs determine size according to following mode, that is:
For feeder line 12, feeder line equals k λ such as the length between 11a and 11b, 11b and 11c or 11c and the 11d between two slots of Vivaldi type antenna
1, λ wherein
1Be to import the wavelength in the microstrip feed line 12, feeder line in the end a Vivaldi type antenna 11d slot and equal λ with length between being connected of diode 15
1/ 4, λ wherein
1For importing the wavelength in the microstrip feed line.
For feeder line 13, feeder line equals (k+0.5) λ such as the length between 11a and 11b, 11b and 11c or 11c and the 11d between two slots of Vivaldi type antenna
1, λ wherein
1Be to import the wavelength in the microstrip feed line 13, feeder line in the end a Vivaldi type antenna 11d slot and equal λ with length between being connected of diode 14
1/ 4.
And as shown in Figure 2, feeder line 12,13 is near λ
f/ 4 distances are passed slot, wherein λ
fFor importing the wavelength of slot.That is to say that the position that feeder line passes the slot of Vivaldi type antenna is short circuit plane or open circuit plane about feeder line as the function of diode state, and be in open circuit zone about slot.
Explanation now is as the operation principle of Fig. 2 device of the function of the control voltage that puts on P:
If control voltage is+VCC:
Diode 15 is in cut-off state so.This is in open circuit with regard to the end that causes feeder line 12, thereby makes in the plane of slot of the antenna 11d that feeds and be in short circuit.So electromagnetic coupled between the slot of feeder line 12 and antenna 11d.Because the specific collapsing length of feeder line 12 between each slot, at other antenna 11c, 11b sets up the homophase short circuit in the plane of three slots of 11a.Therefore, four antenna 11a, 11b, 11c, 11d and feeder line 12 couple in phase.
And because the cause of arrangement mode, diode 14 is in conducting state.Therefore the end at feeder line 13 is short circuit, thereby makes in the plane of slot of the antenna 11d that feeds and be in open circuit.Therefore, between the slot of the feeder line 13 and the antenna 13 of feeding, there is not electromagnetic coupled.Because the specific collapsing length of feeder line 13 between each slot, at other antenna 11c, 11b sets up open circuit in the plane of three slots of 11a.Therefore, neither one antenna and feeder line 13 couplings.
If the control voltage in the feed-in of P place is-VCC:
Diode 15 is in conducting state.Therefore the end of feeder line 12 is in short-circuit condition, is in open circuit thereby make in the plane of slot of the antenna 11d that feeds.Therefore, there is not electromagnetic coupled between the slot of feeder line 12 and antenna 11d.Feeder line 12 is at antenna 11c, 11b, and 11a, each slot between collapsing length can in the plane of other three slots, set up open circuit.In this case, neither one antenna and feeder line 12 couplings.
The operation principle of all devices is as shown in Figure 2 simulated by using simple structure as shown in Figure 3.In this case, such as 11a, 11b, 11c, the slot of 11d-feed antennas type antenna represent by slot 20, and described slot 20 is λ in the distance from the end of slot 1 the feeder line 21 to the connectivity port
f/ 4 places couplings, described feeder line 21 ends are that the feeder line short-term of 70 ohm feeder line short-term and 50 ohm is so that and port match.And, at the opposite side of feeder line, be λ count distance from feeder line 21
fTwo other feeder line 22,23, wherein λ of feeder line 12,13 in the presentation graphs 2 placed at the place
fExpression imports the wavelength of slot.The end of feeder line 22 is the diode 24 that forward is placed, and it is placed between the end and ground wire of feeder line 22, and the end of feeder line 23 is the diode of oppositely placing 25, and it is placed between the end and ground wire of feeder line 23.Midplane between the feeder line 22,23 is positioned at from the other end of slot 20 counts λ
fThe place.The same with feeder line 21, two feeder lines 22,23 use 70 ohm coupling feeder line short-term and 50 ohm coupling feeder line short-term and 2,3 couplings of feed-in port.Not coupling that the distance of separating between the feeder line 22,23 will be enough to make them between the two that is to say, separate apart from 5 times of the as many as feeder line width of e.More particularly, in the scope of simulation, provided the value of each element that uses among Fig. 3 below.
λ
1/4＝8.3mm?????????????W
1＝0.52mm.
λ
f/4＝10.1mm????????????W
f＝0.4mm.
L
70ohms＝8mm???????????????W
70ohms＝1mm
L
50ohms＝6mm???????????????W
50ohms＝1.85mm
e＝2.6mm
L＝6.05mm.
Diode＝HSMP?489B.
Provided coupling in the table 1 from slot to a feeder line or another feeder line as the function of diode bias:
Table 1
| Structure | Control voltage | The diode of | The diode of | Coupling | There is not coupling |
| ?OC-SC ?SC-OC | ??-VCC ??+VCC | By (OC) conducting (SC) | Conducting (SC) is by (OC) | 1 to 21 to 3 | 1 to 31 to 2 |
Simulation result is provided by the curve of Fig. 4 a and 4b, described curve representation selectively coupled in two kinds of structures, the i.e. open circuit/short-circuit structure of two feeder lines or short/open structure.
According to curve, be appreciated that in the OC-SC structure that Fig. 4 a represents, the higher and rank value that shows of parameter S 21 for (1 to-2dB), and parameter S 31 is lower and rank value that show is-20dB.Therefore from the port one to the port, 2 emission is arranged, and 3 not emissions from the port one to the port are insulated between two ports promptly.To the SC-OC structure that Fig. 4 b represents, the situation of generation is opposite.Because parameter S 31 shows-1dB is to the rank value of-2dB, so from the port one to the port, 3 emission is arranged, and since parameter S 21 show-the rank value of 20dB, so from the port one to the port, 2 do not have to launch.
With reference now to Fig. 5 to 7 explanation, will be connected the embodiment of two connecting circuits on the feeder line by emission/receiving circuit that symbol P represents.
As shown in Figure 5, the circuit of use is that can be in two feeder lines 12,13 one or another send the T circuit of energy.Therefore, T circuit shown in Fig. 5 comprises the branch road 30 that is connected on emission/receiving circuit P, described branch road 30 is by two branch roads 31 and 32 expansions of T circuit, and branch road 31 is connected on the feeder line 12 of Fig. 2 embodiment, and branch road 32 is connected on the feeder line 13 of Fig. 2 embodiment simultaneously.For energy correctly being sent in two feeder lines one or another, the size of T circuit must following making:
As above mentioned, at the infall of each feeder line/slot, feeder line 12 shows open circuit, and feeder line 13 shows short circuit simultaneously.For energy is directly sent into feeder line 13 on the grade of T circuit, therefore need:
The open circuit of feeder line 12 makes the T plane become open circuit, makes the T plane become short circuit for the short circuit of feeder line 13.
In order to obtain such working method, need the formula of feeder line 1 below the feed-in slot of antenna 11a and the length between the T circuit satisfy:
L＝nλ
1/2
λ wherein
1Be the wavelength of importing feeder line, and n is an integer.
What this showed in Fig. 5 is perfectly clear.
For proving the flexibility of this T circuit, by using IE3D software, and make the T circuit and Vivaldi type antenna is simulated described circuit according to the mode of representing among Fig. 6.In this case, Vivaldi type antenna 11a is by representing with microstrip feed line 21 slot 20 together: described microstrip feed line 21 is counted λ in the end from slot
f/ 4 and count λ from the end of feeder line 21
1 Slot 20, wherein λ pass in/4 places
fFor importing the wavelength of slot, λ
1For importing the wavelength of microstrip feed line.Feeder line 21 is that 70 ohm of L and 50 ohm feeder line extend by two length, so that the port one of coupling output energy.
And as shown in Figure 6, the T circuit among Fig. 5 comprises the microstrip feed line 25,26 of two lengthenings, and described two microstrip feed lines pass slot 20 counts λ from microstrip feed line 21
fPlace, wherein λ
fExpression imports the wavelength of slot.Article two, feeder line 25 is connected by feeder line 27 together with 26, and described feeder line 27 comprises two 70 ohm of coupling feeder line L and 50 ohm of coupling feeder line L of being complementary with the input port that receives the radiating circuit energy.
And as shown in Figure 6, the T circuit of Fig. 5 comprises the microstrip line 25,26 of two prolongations, and microstrip line 25,26 is sentenced length lambda from line 21
fPass slot 20.Article two, line 25,26 is connected to the input port that receives the transmission circuit energy by the line 27 that comprises two 70 ohm coupling feeder line L and 50 ohm of coupling feeder line L together.
As shown in Figure 6, two feeder lines 25,26 are placed like this: the midplane of two feeder lines is positioned at the other end λ apart from slot 20
f/ 4 places, and the input of T circuit and the distance between the slot equal λ
1/ 2, and the end of feeder line 25 and 26 is λ apart from the distance of slot
1/ 4, so just can on the intersection level of feeder line/slot, be in aforesaid open circuit and short circuit.
More particularly, simulate with following size.
λ
1/4＝8.3mm??????????????W
1＝0.52mm.
λ
f/4＝10.1mm?????????????W
f＝0.4mm.
L
70ohms＝8mm????????????????W
70ohms＝1mm
L
50ohms＝6mm????????????????W
50ohms＝1.85mm
e＝2.6mm
Fig. 7 a and 7b have provided Simulation result, and described Fig. 7 a and 7b represent is under the situation of two kinds of open circuit/short-circuit structures of two kinds of short/open structures of Fig. 7 a and Fig. 7 b, is emission and the reflection coefficient of unit as the function of frequency with dB.In the drawings result of expression shows that passband is extremely wide, less than the parameter S 11 of-10dB and S22 cross at least 1.5GHz and loss minimum, promptly in the loss of 5.6GHz place less than-1.5dB.
Refer now to Fig. 8 a, 8b and Fig. 9 illustrate in greater detail use shown in Fig. 2 the acquisition situation of radiation diversity during that kind of means.As mentioned above, because the system of Fig. 2 depends on the voltage that is applied, the Vivaldi type antenna 11a of two kinds of structures, 11b, 11c, the phase place difference of 11d.As Vivaldi type antenna 11a, 11b, 11c, 11d is during by feeder line 12 feed-ins, just at control voltage be+during VCC, shown in Fig. 8 a, four strip antenna 11a, 11b, 11c, the phase place of 11d is 0 °, when the control voltage that applies during for-VCC, the feeder line that passes Vivaldi type antenna is a feeder line 13, shown in Fig. 8 b.In this case, antenna 11a, the 11c homophase, still with antenna 11b, the phase place between the 11c is opposite.Therefore the radiating pattern of representing among Fig. 9 is corresponding with the structure among Fig. 8 a and the 8b.Be appreciated that when the voltage that applies radiation maximum during, and when the voltage that applies be-22.5 ° of radiation maximum phase shifts during VCC for+VCC.Therefore, according to the control voltage that is applied, the lobe of antenna pattern can aligning direction (180 °,-135 ° ,-90 ° ,-45 °, 0 °, 45 °, 90 °, 135 °) or direction (157.5 ° ,-112.5 ° ,-67.5 °,-22.5 °, 22.5 °, 67.5 °, 112.5 °, 157.5 °), this just can keep radiation diversity.
With reference now to a kind of new topological structure of Figure 10 explanation according to the transmission/reception of electromagnetic wave signal of the present invention.In this case, Vivaldi type antenna 11a, 11b, 11c, by feeder line 12a, one or another feed-in among the 13a are the embodiment in Fig. 2 as the function of control voltage for 11d.Difference with respect to the structure shown in Fig. 1 is two feeder line 12a, and the coupling between the slot of 13a and Vivaldi type antenna is subjected to the influence on two distinct open circuits of slot plane, as the clear demonstration of Figure 10.Especially, feeder line 12a is counted λ from the end of slot
fAntenna 11a is passed at/4 places, 11b, and 11c, the slot of 11d, feeder line 13a is counted λ from the end of slot simultaneously
f/ 4+ λ
fAntenna 11a is passed at/2 places, 11b, 11c, the slot of 11d.Therefore, feeder line is in two distinct open circuit planes really, and the length of feeder line between two slots still will satisfy identical equation, that is:
For feeder line 12a, feeder line is at two the slot 11a and the 11b of Vivaldi type antenna, 11b and 11c, and perhaps the length between 11c and the 11d equals k λ
1, wherein k is a positive integer, λ
1Be the wavelength of importing feeder line,
For feeder line 13a, feeder line is at two the slot 11a and the 11b of Vivaldi type antenna, 11b and 11c, and perhaps the length between 11c and the 11d equals (k+0.5) λ
1, wherein k is a positive integer, λ
1For importing the wavelength of feeder line.Also be in this case, two feeder line 12a, 13a is connected on emission/receiving circuit P by the T circuit the same with the type described among Fig. 5.This new topological structure is as can obtain the antenna pattern diversity under the situation with reference to the topological structure of figure 2.
The above embodiments are done that many places are revised and the scope that do not break away from following claim is clearly to one skilled in the art.
Claims (9)
1. the transmission/reception of an electromagnetic signal comprises: two slot-feed antennas (11a, 11b at least, 11c, 11d) reception of type electromagnetic signal and/or emitter are with the jockey that at least one described reception and/or emitter are linked to each other with the operative installations of multibeam signals
It is characterized in that jockey comprises by Connection Element and is connected two feeder lines (12,13 on the operative installations (P); 12a, 13a), electromagnetic coupled between the slot set of described two feeder lines and slot-feed antennas, every feeder line is with switch element (14,15) be terminal, described switch element (14,15) is placed with simulation as the open circuit of a feeder terminal of the function of pilot signal and the short circuit and the open circuit of short circuit and another feeder terminal by certain mode, thereby can obtain different antenna patterns.
2. according to the device described in the claim 1, it is characterized in that slot-feed antennas is around the central point Vivaldi type antenna opened of regular interval each other.
3. according to claim 2 or 3 described devices, it is characterized in that feeder line comprises microstrip antenna or coplane antenna.
4. according to the described device of claim 1 to 3, it is characterized in that feeder line passes the slot of the slot-feed antennas in the open circuit zone in the slot.
5. according to the described device of claim 1 to 3, it is characterized in that feeder line passes the slot of slot-feed antennas in two distinct open circuit planes of slot.
6. according to the described device of claim 1 to 5, it is characterized in that the length of first feeder line between two slots of slot-feed antennas equals k λ
t, and the length of second feeder line between two slots of slot-feed antennas equals (k+0.5) λ
t, λ wherein
tBe the wavelength of importing feeder line, and k is a positive integer.
7. according to the device described in the claim 1 to 6, it is characterized in that switch element comprises diode.
8. according to the device described in the claim 1 to 7, it is characterized in that Connection Element comprises the T element, described size of component is set to will be selectively sends into energy to one or another feeder line.
9. according to the device described in the claim 1 to 8, it is characterized in that feeder line equals at the slot of slot-feed antennas and the length between the T:
1=n λ
1/ 2 wherein n be integer, λ
1For importing the wavelength of feeder line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0107866A FR2826209A1 (en) | 2001-06-15 | 2001-06-15 | DEVICE FOR RECEIVING AND / OR TRANSMITTING ELECTROMAGNETIC SIGNALS WITH RADIATION DIVERSITY |
| FR0107866 | 2001-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1392680A true CN1392680A (en) | 2003-01-22 |
| CN1307808C CN1307808C (en) | 2007-03-28 |
Family
ID=8864362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021232105A Expired - Fee Related CN1307808C (en) | 2001-06-15 | 2002-06-12 | Electromagnetic signal receiving and/or transmitting device using radiation diversity |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6657600B2 (en) |
| EP (1) | EP1267446B1 (en) |
| JP (1) | JP4034128B2 (en) |
| CN (1) | CN1307808C (en) |
| AT (1) | ATE390733T1 (en) |
| DE (1) | DE60225758D1 (en) |
| FR (1) | FR2826209A1 (en) |
| MX (1) | MXPA02005647A (en) |
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| CN101401258B (en) * | 2006-05-25 | 2012-10-10 | 松下电器产业株式会社 | Variable slot antenna and method for driving same |
| CN101002404B (en) * | 2004-06-15 | 2012-12-12 | 艾利森电话股份有限公司 | Antenna diversity arrangement and method |
| CN101326681B (en) * | 2006-04-03 | 2013-05-08 | 松下电器产业株式会社 | Differential-feed slot antenna |
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| KR100864078B1 (en) * | 2005-11-08 | 2008-10-16 | 주식회사 케이엠더블유 | High frequency switch |
| FR2894079A1 (en) * | 2005-11-30 | 2007-06-01 | Thomson Licensing Sas | FRONTAL SYSTEM OF BI-BAND ANTENNAS |
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| JP4904197B2 (en) * | 2007-05-08 | 2012-03-28 | パナソニック株式会社 | Unbalanced feed broadband slot antenna |
| JP4904196B2 (en) * | 2007-05-08 | 2012-03-28 | パナソニック株式会社 | Unbalanced feed broadband slot antenna |
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| GB2534689B (en) * | 2014-02-18 | 2018-10-24 | Filtronic Wireless Ab | Broadband antenna |
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-
2001
- 2001-06-15 FR FR0107866A patent/FR2826209A1/en active Pending
-
2002
- 2002-06-07 MX MXPA02005647A patent/MXPA02005647A/en active IP Right Grant
- 2002-06-11 DE DE60225758T patent/DE60225758D1/en not_active Expired - Lifetime
- 2002-06-11 EP EP02291436A patent/EP1267446B1/en not_active Expired - Lifetime
- 2002-06-11 AT AT02291436T patent/ATE390733T1/en not_active IP Right Cessation
- 2002-06-11 US US10/166,845 patent/US6657600B2/en not_active Expired - Lifetime
- 2002-06-12 CN CNB021232105A patent/CN1307808C/en not_active Expired - Fee Related
- 2002-06-13 JP JP2002173340A patent/JP4034128B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585191B (en) * | 2003-07-02 | 2010-08-18 | 汤姆森许可贸易公司 | Dual-band antenna with twin port |
| CN101002404B (en) * | 2004-06-15 | 2012-12-12 | 艾利森电话股份有限公司 | Antenna diversity arrangement and method |
| CN101326681B (en) * | 2006-04-03 | 2013-05-08 | 松下电器产业株式会社 | Differential-feed slot antenna |
| CN101401258B (en) * | 2006-05-25 | 2012-10-10 | 松下电器产业株式会社 | Variable slot antenna and method for driving same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4034128B2 (en) | 2008-01-16 |
| US6657600B2 (en) | 2003-12-02 |
| ATE390733T1 (en) | 2008-04-15 |
| DE60225758D1 (en) | 2008-05-08 |
| EP1267446A1 (en) | 2002-12-18 |
| CN1307808C (en) | 2007-03-28 |
| JP2003101337A (en) | 2003-04-04 |
| MXPA02005647A (en) | 2004-09-10 |
| US20030020664A1 (en) | 2003-01-30 |
| FR2826209A1 (en) | 2002-12-20 |
| EP1267446B1 (en) | 2008-03-26 |
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